[spooky]

Right,

Try booting your PSX with the lid open and no disc inserted.

Firstly check to see where the laser is, is it half way along its track or right up to the end stop at the spindle end?

To the right of the laser assembly you will see a small round switch resessed into the case, hold this down with a pen and then switch on. If all is well you should see the laser move up and down a few times and if the laser is situated half way along the track then it should return to the centre.

Next try it with a disc in place and check again, this time the laser should see the disc and signal the motor to spin.

(There are 2 motors in the laser assembly, 1 to drive the laser up and down the track and 1 to spin the disk)

Let me know the outcome.